#! /usr/bin/node

if(process.argv.length !== 3){
  console.error('命令行格式：cmd base64_string');
  process.exit(1);
}
const log = console.log,
      info = process.argv[2];

let buf = new Buffer(info, 'base64');
let usr = buf.toString('utf8').split(':');
if(usr.length !== 2){
  console.error('信息有误！');
  process.exit(2);
}
log(`usr:${usr[0]}`);
log(`pwd:${usr[1]}`);
